1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VashaNatasha [74]
3 years ago
8

A tetraphenyl phosphonium chloride (TPPCl) powder (FW=342.39) is 94.0 percent pure. How many grams are needed to prepare 0.45 L

of a 33.0 mM solution?
Chemistry
1 answer:
slega [8]3 years ago
5 0

Answer:

5.41 g

Explanation:

Considering:

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Or,

Moles =Molarity \times {Volume\ of\ the\ solution}

Given :

For tetraphenyl phosphonium chloride :

Molarity = 33.0 mM = 0.033 M (As, 1 mM = 0.001 M)

Volume = 0.45 L

Thus, moles of tetraphenyl phosphonium chloride :

Moles=0.033 \times {0.45}\ moles

Moles of TPPCl = 0.01485 moles

Molar mass of TPPCl = 342.39 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

0.01485\ g= \frac{Mass}{342.39\ g/mol}

Mass of TPPCl = 5.0845 g

Also,

TPPCl is 94.0 % pure.

It means that 94.0 g is present in 100 g of powder

5.0845 g is present in 5.41 g of the powder.

<u>Answer -  5.41 g</u>

You might be interested in
What is the mass of 0.28 mol of iron
maria [59]
Mass = number of mol x molar mass
Mass = 0.28mol x 55.8g/mol
Mass = 15.624g
5 0
3 years ago
Read 2 more answers
Will reward brainliest !!!
Anna [14]
The best answer choice here would be 'Combination'
8 0
3 years ago
Read 2 more answers
Use the periodic table entry below to answer the following question. What is the atomic mass of the element cobalt (Co)?
Ilia_Sergeevich [38]
I want to say 59 atomic mass units<span> is beta decay, but I'm just guessing from previous Chem. class.</span>
8 0
3 years ago
Read 2 more answers
What does changing densities cause to occur
Dafna1 [17]

Answer:

Explanation:

Please Elaborate

8 0
3 years ago
The lungs are covered with a thin layer called ________​
Naddika [18.5K]

interstitium

#keeponlearning

5 0
3 years ago
Read 2 more answers
Other questions:
  • if scientist had tried to repeat Thomson's experiment and found that they could not, would Thomson's conclusion still have been
    12·1 answer
  • Which of the following types of electromagnetic radiation have higher frequencies than visible light and which have shorter freq
    14·1 answer
  • Explain what lattice energy is and how it affects
    9·1 answer
  • If the concentration of a KCl solution is 16.0% (m/v), then the mass of KCl in 26.0 mL of solution is ________.
    11·1 answer
  • How is carbon dioxide released by animals? *
    12·2 answers
  • What part of the atom is involved in chemical reactions?
    15·2 answers
  • 1. Tyrone is riding his newly bought motorcycle at 30 m/s when he sees a cat on the road ahead. He applied immediately the brake
    15·1 answer
  • Ocotillo plants are better adapted for surviving in the desert than maple trees because the characteristics of ocotillo leaves –
    8·1 answer
  • Hillsdale and Cordera are the same distance from the equator, and both are near the ocean. Is Cordera warmer, colder, or the sam
    12·1 answer
  • Which two things cause the orbits of the planets to be the nearby circular
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!